I just bought an 8 hp short shaft mariner 2 stroke. I'm wondering if this motor uses the same block as the 9.9 and the 15 motors and if so what changes need to be made to increase the horsepower of this little motor.
Thanks
hey guys! I'm needing a yamaha 25/30 gearcase or short shaft lower unit in good to excellent condition. I have cash in hand and would take 2 or 3 if the opportunity arose.